System code number 5
Weather-compensated heating control system with drinking water heating system desig-
ned as instantaneous water heater
4
Drinking water heating via FS2 or
thermostat, see chapter 5.5.12
4
Heat exchanger pump is running when
drinking water is demanded
4
Option of increasing the control quality
due to the systems feature of recognizing
when drinking water is being tapped by
means of a hydraulic pressure switch
(HPS) or a drinking water return flow sen-
sor (DWRfS), see chapter 5.5.13
4
Option of improving the response behav-
ior when using HPS or DWRfS through
the following function: Recharging the
heat exchanger, see chapter 5.5.13
4
Optional priority circuit for the drinking
water heating system designed as reverse
control or set-back control system, see
chapter 5.5.6
4
NOTE
: For FS2, you must always use a
quick-responding Pt 1000 sensor, inde-
pendent of the other sensors. Only when
the system is equipped with the option
BO3 only can you activate the heating
circulation pump (HCP).
EB 5431 EN
35
System descriptions
F
RF
FS1
HCP
HEP
FS2
DWRfS
HPS
RS
OS
DW
Circ.
CP
CW
RfS
Fig. 8
⋅
System code number 5
Summary of Contents for TROVIS 5431
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